Extend

Extend is a product and shipping protection platform for merchants and ecommerce brands. Its API lets merchants surface extended-warranty and shipping-protection offers at checkout and post-purchase, create and manage protection contracts, process orders and line items, file and track claims, and manage service orders, refunds, and leads. Extend provides separate demo (sandbox) and production environments, header-based date versioning, OAuth2 client-credentials authentication with short-lived access tokens, idempotency keys on writes, and webhooks for claim and service-order status changes, alongside client-side SDKs and prebuilt commerce-platform integrations for Shopify, BigCommerce, Magento, WooCommerce, and Salesforce Commerce Cloud.

Extend publishes 13 API contracts indexed on the APIs.io network, including Claims Management API, Contracts API, Leads API, and 10 more. Tagged areas include Company, Consumer, Product Protection, Extended Warranty, and Shipping Protection.

The Extend catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Extend’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, changelog, authentication, and 29 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

54.1/100 developing ▬ flat Agent 40/100 agent ready Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

AccessSelf serve

11 published contracts

Company ConsumerProduct ProtectionExtended Warranty Shipping Protection E-Commerce Warranty Claims Contracts Retail Insurance

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 54.1/100 · developing

Contract Quality 11.7 / 21

Developer Ergonomics 12.1 / 17

Access Clarity 5.8 / 17

Operational Transparency 5.8 / 11

Contract Governance 3.6 / 10

Discoverability 6.2 / 9

Regulatory Posture 3.3 / 15

Agent readiness — 40/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Insurance regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 34.2 — up to +13.2 composite points
Contract Quality scores 55.0 — up to +11.3 composite points
Contract Governance scores 35.6 — up to +7.7 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/extend/apis.yml: open an issue on github.com/api-evangelist/extend to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Commerce Platform Ecosystems (Shopify, WooCommerce, Stripe Apps)	builds-on	34.5 (thin)	-	-
MACH & Headless Commerce	builds-on	34.5 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

APIs 13

Individual APIs this provider publishes, each with its own machine-readable definition.

Extend API

Extend's REST API for product and shipping protection: manage offers, contracts, orders and line items, refunds, claims, service orders, and leads. Header-based date versioning;...

Extend Claims Management API

The Claims Management API from Extend — 2 operation(s) for claims management.

Extend Contracts API

The Contracts API from Extend — 2 operation(s) for contracts.

Extend Leads API

The Leads API from Extend — 3 operation(s) for leads.

Extend Offers API

The Offers API from Extend — 1 operation(s) for offers.

Extend Orders API

The Orders API from Extend — 13 operation(s) for orders.

Extend Products API

The Products API from Extend — 2 operation(s) for products.

Extend Refunds API

The Refunds API from Extend — 1 operation(s) for refunds.

Extend Service Orders API

The Service Orders API from Extend — 10 operation(s) for service orders.

Extend Dynamic Return Policy API

The Dynamic Return Policy API from Extend — 1 operation(s) for dynamic return policy.

Extend Line Items API

The Line Items API from Extend — 7 operation(s) for line items.

Extend Shipping Offers API

The ShippingOffers API from Extend — 3 operation(s) for shippingoffers.

Extend Webhooks API

The Webhooks API from Extend — 1 operation(s) for webhooks.

Scroll for all 13

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Extend Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Extend API Rules

10 rules · 7 errors 2 warnings 1 info

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Extend Authentication

oauth2 · 2 schemes

SECURITY

Extend Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Extend Agentic Access

43 operations · 26 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Login

Sandbox

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LLMsTxt

LLMsTxt

WellKnown

WellKnown

X-MCPServerCandidate

X-MCPServerCandidate

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Spectral

Vocabulary

ErrorCatalog

Conventions

Idempotency

Conformance

Lifecycle

Webhooks

DataModel

Components

Scroll for all 10

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

Deprecation

Support

StatusPage

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Newsroom

Newsroom

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: extend
name: Extend
description: Extend is a product and shipping protection platform for merchants and ecommerce brands. Its API lets merchants
  surface extended-warranty and shipping-protection offers at checkout and post-purchase, create and manage protection contracts,
  process orders and line items, file and track claims, and manage service orders, refunds, and leads. Extend provides separate
  demo (sandbox) and production environments, header-based date versioning, OAuth2 client-credentials authentication with
  short-lived access tokens, idempotency keys on writes, and webhooks for claim and service-order status changes, alongside
  client-side SDKs and prebuilt commerce-platform integrations for Shopify, BigCommerce, Magento, WooCommerce, and Salesforce
  Commerce Cloud.
url: https://raw.githubusercontent.com/api-evangelist/extend/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- softbank-vision-fund
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
image: https://avatars.githubusercontent.com/u/46018312?v=4
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-03
tags:
- Company
- Consumer
- Product Protection
- Extended Warranty
- Shipping Protection
- E-Commerce
- Warranty
- Claims
- Contracts
- Retail
- Insurance
tags_raw:
- Company
- Consumer
- Product Protection
- Extended Warranty
- Shipping Protection
- Ecommerce
- Warranty
- Claims
- Contracts
- Retail
- Insurance
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/extend-agentic-access.yml
- type: Spectral
  url: rules/extend-rules.yml
- type: Vocabulary
  url: vocabulary/extend-vocabulary.yml
- type: Deprecation
  url: lifecycle/extend-lifecycle.yml
- type: ErrorCatalog
  url: errors/extend-problem-types.yml
- type: Hosts
  url: hosts/extend-hosts.yml
- type: Vendors
  url: vendors/extend-vendors.yml
- type: Newsroom
  url: https://www.extend.com/press
- type: Website
  url: https://www.extend.com/
- type: DomainSecurity
  url: security/extend-domain-security.yml
- type: DeveloperPortal
  url: https://docs.extend.com
- type: Documentation
  url: https://docs.extend.com/docs
- type: APIReference
  url: https://docs.extend.com/reference
- type: GettingStarted
  url: https://docs.extend.com/docs/getting-started-with-extends-api
- type: Support
  url: https://www.extend.com/contact-us
- type: Blog
  url: https://www.extend.com/articles
- type: GitHubOrganization
  url: https://github.com/helloextend
- type: Login
  url: https://merchants.extend.com
- type: TermsOfService
  url: https://www.extend.com/terms
- type: PrivacyPolicy
  url: https://www.extend.com/privacy
- type: StatusPage
  url: https://status.extend.com
- type: ChangeLog
  url: https://docs.extend.com/changelog
- type: Authentication
  url: authentication/extend-authentication.yml
- type: Conventions
  url: conventions/extend-conventions.yml
- type: Idempotency
  url: conventions/extend-conventions.yml
- type: LLMsTxt
  url: llms/extend-llms.txt
- type: WellKnown
  url: well-known/extend-well-known.yml
- type: X-MCPServerCandidate
  url: mcp/extend-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: Conformance
  url: conformance/extend-conformance.yml
- type: Lifecycle
  url: lifecycle/extend-lifecycle.yml
- type: Sandbox
  url: sandbox/extend-sandbox.yml
- type: Webhooks
  url: asyncapi/extend-webhooks.yml
- type: DataModel
  url: data-model/extend-data-model.yml
- type: Components
  url: components/extend-components.yml
- type: Packages
  url: packages/extend-packages.yml
- type: SDKs
  url: packages/extend-packages.yml
apis:
- name: Extend API
  description: 'Extend''s REST API for product and shipping protection: manage offers, contracts, orders and line items, refunds,
    claims, service orders, and leads. Header-based date versioning; OAuth2 client-credentials auth via the X-Extend-Access-Token
    header; idempotent writes via X-Idempotency-Key.'
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Product Protection
  - Shipping Protection
  - Warranty
  - E-Commerce
  tags_raw:
  - Product Protection
  - Shipping Protection
  - Warranty
  - Ecommerce
  properties:
  - type: APIReference
    url: https://docs.extend.com/reference
  - type: Sandbox
    url: https://api-demo.helloextend.com
  aid: extend:extend-api
- aid: extend:extend-claims-management-api
  name: Extend Claims Management API
  description: The Claims Management API from Extend — 2 operation(s) for claims management.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Claims Management
  properties:
  - type: OpenAPI
    url: openapi/extend-claims-management-api-openapi.yml
- aid: extend:extend-contracts-api
  name: Extend Contracts API
  description: The Contracts API from Extend — 2 operation(s) for contracts.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Contracts
  properties:
  - type: OpenAPI
    url: openapi/extend-contracts-api-openapi.yml
- aid: extend:extend-leads-api
  name: Extend Leads API
  description: The Leads API from Extend — 3 operation(s) for leads.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Leads
  properties:
  - type: OpenAPI
    url: openapi/extend-leads-api-openapi.yml
- aid: extend:extend-offers-api
  name: Extend Offers API
  description: The Offers API from Extend — 1 operation(s) for offers.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Offers
  properties:
  - type: OpenAPI
    url: openapi/extend-offers-api-openapi.yml
- aid: extend:extend-orders-api
  name: Extend Orders API
  description: The Orders API from Extend — 13 operation(s) for orders.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Order
  tags_raw:
  - Orders
  properties:
  - type: OpenAPI
    url: openapi/extend-orders-api-openapi.yml
- aid: extend:extend-products-api
  name: Extend Products API
  description: The Products API from Extend — 2 operation(s) for products.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Product
  tags_raw:
  - Products
  properties:
  - type: OpenAPI
    url: openapi/extend-products-api-openapi.yml
- aid: extend:extend-refunds-api
  name: Extend Refunds API
  description: The Refunds API from Extend — 1 operation(s) for refunds.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Refunds
  properties:
  - type: OpenAPI
    url: openapi/extend-refunds-api-openapi.yml
- aid: extend:extend-service-orders-api
  name: Extend Service Orders API
  description: The Service Orders API from Extend — 10 operation(s) for service orders.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Service Orders
  properties:
  - type: OpenAPI
    url: openapi/extend-service-orders-api-openapi.yml
- aid: extend:extend-dynamic-return-policy-api
  name: Extend Dynamic Return Policy API
  description: The Dynamic Return Policy API from Extend — 1 operation(s) for dynamic return policy.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Dynamic Return Policy
  properties:
  - type: OpenAPI
    url: openapi/extend-dynamic-return-policy-api-openapi.yml
- aid: extend:extend-line-items-api
  name: Extend Line Items API
  description: The Line Items API from Extend — 7 operation(s) for line items.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Line Items
  properties:
  - type: OpenAPI
    url: openapi/extend-line-items-api-openapi.yml
- aid: extend:extend-shippingoffers-api
  name: Extend Shipping Offers API
  description: The ShippingOffers API from Extend — 3 operation(s) for shippingoffers.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - ShippingOffers
  properties:
  - type: OpenAPI
    url: openapi/extend-shippingoffers-api-openapi.yml
- aid: extend:extend-webhooks-api
  name: Extend Webhooks API
  description: The Webhooks API from Extend — 1 operation(s) for webhooks.
  humanURL: https://docs.extend.com/docs/getting-started-with-extends-api
  baseURL: https://api.helloextend.com
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/extend-webhooks-api-openapi.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence
x-readme-harvest:
  date: '2026-10-14'
  ops: 43
  tool: harvest-readme-openapi.py
  portal: https://docs.extend.com

Extend API — frequently asked questions

Does Extend have an API?

Yes. APIs.io lists 13 APIs from Extend, including Extend API, Extend Claims Management API and Extend Contracts API, and 10 more.

Is there an OpenAPI specification for the Extend API?

Yes. APIs.io indexes 12 OpenAPI specifications for Extend, each linked for download from this page.

How do I authenticate with the Extend API?

Extend documents its authentication (oauth2 · 2 schemes). The details are profiled on APIs.io as Extend Authentication.

Is the Extend API ready for AI agents?

Extend has a Kin Score of 54.1 out of 100 (developing) and an Agent Readiness score of 39.5 (agent-ready), scored by API Evangelist on 2026-10-31.

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